Patents by Inventor Larry M. Sivertson

Larry M. Sivertson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Browning heater for a microwave oven
    Patent number: 4542268
    Abstract: A browning heater for a microwave oven. The heater is comprised of a porcelain coated steel cover sheet, a foil resistance heater, a thermal insulation sheet and a stainless steel backplate bound together in order. The heater is mounted on the interior cavity roof of a microwave oven. The heater browns food by means of infrared radiation.
    Type: Grant
    Filed: January 28, 1980
    Date of Patent: September 17, 1985
    Assignee: Litton Systems, Inc.
    Inventors: George A. Jarvis, Larry M. Sivertson